\documentclass[a4paper]{article}

\usepackage{algorithm}
\usepackage{algpseudocode}
\algrenewcommand{\textproc}{} % 该命令可以保证Function名称是小写的格式


\begin{document}

\begin{algorithm}[ht!]
	\caption{Record Promotion}
	\label{alg: promote}
	\begin{algorithmic}[1]
	    \Function{promote\_record}{i, idx, p, count}
		\State{hello, world.}
		\EndFunction
	\end{algorithmic}
\end{algorithm}


\end{document}
